Samsung — after sell service not provided

i was register a complaint on 20 june 2015 from samsung customer care regarding gas leakage. From that day i continue call on customer care till today above 50 calls. 24 june 2015 a technician visit for collected 672/- rs for service charge only. From that day they said service center team will visit to repair your AC. But today 01 july 2015. they did not come and only customer care said that they said come today or tomorrow. if they do not give better service then it should be stop dealing AC with customer. samsung AC reference no is [protected] and registered date 20june 2015 registered mobile no is [protected] alternate no [protected].